- The end of a long bone that is originally separated from the main bone by a layer of cartilage but later becomes united to the main bone through ossification.
- See pineal gland.
[Greek epiphusis, an excrescence : epi-, epi- + phusis, growth.]
epiphysial ep'i·phys'i·al (ĕp'ə-fĭz'ē-əl) or ep'i·phys'e·al adj.




